Diseases

Grey mold

Botrytis cinerea

Grey mold is a polyphagous fungal disease manifesting as watery spots and a characteristic grey fuzzy growth on plant organs. The disease causes tissue softening and decay, often affecting plants during the flowering or ripening stages.

Mentioned in descriptions 7 316 varieties reference book.

The pathogen is a facultative parasite that develops on living tissues, weakened plants, and plant debris. Externally, the pathology manifests as the appearance of a grey fuzzy growth consisting of fungal mycelium and spores, as well as watery spots leading to tissue softening and wilting of the affected areas.

Pathogen activity depends directly on environmental conditions. The disease develops most aggressively at temperatures between +15 and +25°C and high relative humidity above 80–90%. The presence of free moisture, high planting density, mechanical damage, and physiological weakness of the plants significantly contribute to the spread of the infection.

Varietal resistance is complex in nature and is determined by the morphological characteristics of the plants, their chemical composition, and ontogenetic differences. In the state variety testing system, phytopathological assessment is conducted on a scale from 0 to 5 points by analyzing the natural infection background, which allows for the identification of genotypes that are resistant, tolerant, or susceptible to the pathogen.

Sources10

Breakdown by crop

Grey mold of grapevine 1 060 Grey Mold of Grapevine 544 Gray Mold of Garden Strawberry 160 Grey Mold of Sunflower 122 Grey mold of raspberry 36 Strawberry gray mold 30 Grey mold of zonal geranium 29 Tomato gray mold 29 Botrytis Blight of Lily 20 Chocolate Spot — Faba Bean 20 Grey mold — small-seeded faba bean 18 Grey Mold of Rose 17 Grey mold of pepper 13 Botrytis blight of Hydrangea macrophylla 12 Grey Mold of Lettuce 11 Grey mold of chrysanthemum 11 Grey Mold of Rapeseed 11 Grey Mold of Sweet Cherry 11 Gray mold of raspberry and blackberry 9 Peach Gray Mold 9 Petchoa Botrytis blight 9 Tulip Botrytis Blight 9 Gray mold of pea 9 Gray Mold of Poinsettia 8

Found in these crops

Grapevine 1 063 Common grape vine 538 Garden strawberry 161 Sunflower 68 Red raspberry 37 Strawberry 31 Horseshoe pelargonium 28 Tick Bean 28 Tomato 27 Broad bean 24 Lily 22 Rose 18

Varieties that feature this in their description

Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.

Malling Jewel

Active

Rubus idaeus L. · Red raspberry

Szkółka Jagoda Teresa i Jan Wyrobek

FR NL PL SI

9 records

Kerala

Active

Zea mays L. · Maize

Monsanto Technology, Missouri US

AT HU SK UA

7 records

SY Otello

Active

Helianthus annuus L. · Sunflower

SYNGENTA FRANCE S.A.S.

FR PT UA

7 records

Sumcol 01

Active

Plectranthus L’Hér. · Spurflower

Schräder, Ralf

CZ HU PL

5 records

Pegasus

Active

Fragaria L. · Strawberry

INSTITUTE OF HORTICULTURAL

BE CZ IT

5 records

P64HE233

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

IT SK UA

8 records

ES Lena

Active

Helianthus annuus L. · Sunflower

Euralis Semences FR

AT FR IT

6 records

Everest

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

VINSON PETER

NL PL UA

10 records

Avignon

Protection expired

Lilium L. · Lily

Vletter, Floris|Rijnsburg, Netherlands

BE FR NL

5 records

Alisson

Active

Helianthus annuus L. · Sunflower

Rustica Prograin Genetique SA (FR)

AT FR IT

10 records

Alambra CS

Active

Helianthus annuus L. · Sunflower

Pierre GARRAUD

IT RO UA

6 records

Ajax

Active

Helianthus annuus L. · Sunflower

Verneuil Recherche SA (FR)

FR IT UA

7 records

Rubis des jardins

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Philippe Chartier

FR UA

7 records

Peredovick

Active

Helianthus annuus L. · Sunflower

Sud Cereales (FR)

ES FR

5 records

Puma

Active

Chrysanthemum L. · Chrysanthemum

VAN DER KNAAP IR. J.

IT NL

5 records

Purple Monarch

Active

Aster L. · Aster

Peter Akerboom

DK NL

5 records

P64LE119

Active

Helianthus annuus L. · Sunflower

Sadik El Sayed

ES UA

9 records

Macho

Active

Vicia faba L. · Broad bean

Norddeutsche Pflanzenzucht Hans-Georg Lembke KG

EE LT

7 records

Evie 2

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

VINSON PETER

NL UA

9 records

Delniwa

Active

Rubus idaeus L. · Red raspberry

Orzel Agnieszka

PL UA

8 records

Bolivia

Active

Vicia faba L. · Broad bean

Norddeutsche Pflanzenzucht Hans-Georg Lembke KG

EE LT

9 records

MAR 109

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Marionnet S.A.S

5 records

Sibilla

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Michelangelo Leis^^^Alessio Martinelli

7 records

Regent

Active

Vitis L. · Grapevine

Gerhardt Alleweldt c/o Institut für Rebenzüchtung

6 records

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Diseases

Powdery mildew 33 570
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Downy mildew 16 384
Leaf spot diseases 15 926
Rust 14 859
Verticillium wilt 12 175
Scab 12 064

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.